Buggy code:
public class JMeterThread implements Runnable , Interruptible { private static final Logger log = LoggingManager . getLoggerForClass ( ) ; public static final String PACKAGE_OBJECT = "JMeterThread.pack" ; public static final String LAST_SAMPLE_OK = "JMeterThread.last_sample_ok" ; private final Controller controller ; private final HashTree testTree ; private final TestCompiler compiler ; private final JMeterThreadMonitor monitor ; private final JMeterVariables threadVars ; private final Collection < TestListener > testListeners ; private final ListenerNotifier notifier ; private String threadName ; private int initialDelay = 0 ; private int threadNum = 0 ; private long startTime = 0 ; private long endTime = 0 ; private boolean scheduler = false ; private ThreadGroup threadGroup ; private StandardJMeterEngine engine = null ; private volatile boolean running ; private volatile boolean onErrorStopTest ; private volatile boolean onErrorStopTestNow ; private volatile boolean onErrorStopThread ; private volatile Sampler currentSampler ; public JMeterThread ( HashTree test , JMeterThreadMonitor monitor , ListenerNotifier note ) { } public void setInitialContext ( JMeterContext context ) { } public void setScheduled ( boolean sche ) { } public void setStartTime ( long stime ) { } public long getStartTime ( ) { } public void setEndTime ( long etime ) { } public long getEndTime ( ) { } private void stopScheduler ( ) { } private void startScheduler ( ) { } public void setThreadName ( String threadName ) { } private static final boolean startEarlier = JMeterUtils . getPropDefault ( "jmeterthread.startearlier" , true ) ; private static final boolean reversePostProcessors = JMeterUtils . getPropDefault ( "jmeterthread.reversePostProcessors" , false ) ; public void run ( ) { } @ SuppressWarnings ( "deprecation" ) private SampleResult process_sampler ( Sampler current , Sampler parent , JMeterContext threadContext ) { } private List < SampleListener > getSampleListeners ( SamplePackage samplePack , SamplePackage transactionPack , TransactionSampler transactionSampler ) { } private void initRun ( JMeterContext threadContext ) { } private void threadStarted ( ) { } private void threadFinished ( ) { } private static class ThreadListenerTraverser implements HashTreeTraverser { private boolean isStart = false ; private ThreadListenerTraverser ( boolean start ) { } public void addNode ( Object node , HashTree subTree ) { } public void subtractNode ( ) { } public void processPath ( ) { } } public String getThreadName ( ) { } public void stop ( ) { } public boolean interrupt ( ) { } private void stopTest ( ) { } private void stopTestNow ( ) { } private void stopThread ( ) { } @ SuppressWarnings ( "deprecation" ) private void checkAssertions ( List < Assertion > assertions , SampleResult parent , JMeterContext threadContext ) { Iterator < Assertion > iter = assertions . iterator ( ) ; while ( iter . hasNext ( ) ) { Assertion assertion = iter . next ( ) ; TestBeanHelper . prepare ( ( ( TestElement ) ( assertion ) ) ) ; if ( assertion instanceof AbstractScopedAssertion ) { AbstractScopedAssertion scopedAssertion = ( ( AbstractScopedAssertion ) ( assertion ) ) ; String scope = scopedAssertion . fetchScope ( ) ; <START_BUG> if ( ( scopedAssertion . isScopeParent ( scope ) ) || ( scopedAssertion . isScopeAll ( scope ) ) ) { <END_BUG> processAssertion ( parent , assertion ) ; } if ( ( scopedAssertion . isScopeChildren ( scope ) ) || ( scopedAssertion . isScopeAll ( scope ) ) ) { SampleResult [ ] children = parent . getSubResults ( ) ; boolean childError = false ; for ( int i = 0 ; i < ( children . length ) ; i ++ ) { processAssertion ( children [ i ] , assertion ) ; if ( ! ( children [ i ] . isSuccessful ( ) ) ) { childError = true ; } } if ( childError && ( parent . isSuccessful ( ) ) ) { AssertionResult assertionResult = new AssertionResult ( ( ( org . apache . jmeter . testelement . AbstractTestElement ) ( assertion ) ) . getName ( ) ) ; assertionResult . setResultForFailure ( "One<seq2seq4repair_space>or<seq2seq4repair_space>more<seq2seq4repair_space>sub-samples<seq2seq4repair_space>failed" ) ; parent . addAssertionResult ( assertionResult ) ; parent . setSuccessful ( false ) ; } } } else { processAssertion ( parent , assertion ) ; } } threadContext . getVariables ( ) . put ( JMeterThread . LAST_SAMPLE_OK , Boolean . toString ( parent . isSuccessful ( ) ) ) ; } private void processAssertion ( SampleResult result , Assertion assertion ) { } @ SuppressWarnings ( "deprecation" ) private void runPostProcessors ( List < PostProcessor > extractors ) { } @ SuppressWarnings ( "deprecation" ) private void runPreProcessors ( List < PreProcessor > preProcessors ) { } @ SuppressWarnings ( "deprecation" ) private void delay ( List < Timer > timers ) { } private void notifyTestListeners ( ) { } private void notifyListeners ( List < SampleListener > listeners , SampleResult result ) { } public void setInitialDelay ( int delay ) { } private void rampUpDelay ( ) { } public int getThreadNum ( ) { } public void setThreadNum ( int threadNum ) { } private class IterationListener implements LoopIterationListener { public void iterationStart ( LoopIterationEvent iterEvent ) { } } public void setEngine ( StandardJMeterEngine engine ) { } public void setOnErrorStopTest ( boolean b ) { } public void setOnErrorStopTestNow ( boolean b ) { } public void setOnErrorStopThread ( boolean b ) { } public void setThreadGroup ( ThreadGroup group ) { } }

Fix:
if ( ( ( scopedAssertion . isScopeParent ( scope ) ) || ( scopedAssertion . isScopeAll ( scope ) ) ) || ( scopedAssertion . isScopeVariable ( scope ) ) ) {